jcolwell Offline Upload & Sell: On
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I use a Contax focus rail with my Mamiya M645 A 120mm f/4 Macro. I mount it on a 12" general-purpose rail, which gives convenient adjustments for coarse movements, using the clamp on the GP rail, and fine movements, with the Contax rail gears. Other 'alt' focus rails from Pentax and etc are pretty good (and a bit less expensive), but the Contax is the best I've used. You should be able to get a Contax focus rail on eBay for about half of your budget.
 © jcolwell 2019
Contax focus rail on Hejnar 12
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